Air-cooled wall



@et 7 i924- H. J. KERR AIR COOLED WALL Filed June l2. 1919 2 Sheets-Sheet l INVENTOR.

BY YLUI/ff MTTORNEYS.

@ramas oei. 7, ieee.

islam maar* rance.

HOWARD J. KEER, OF BAYONNE, NEW EBSEY, ASSIGNOR T0 THE BABCOGK & W'IL.-

COX COMPANY, 0F BAYONNE, NEW JERSEY, A CORPQRATION OF NEW JERSEY.

Aia-coomnn WALL.

Application filed June 12, 1919, Serial No. 308,671.l

To all wlem z't may concern:

Be it kiown that I, HOWARD J. KERR, a citizen of the United States, residing at Bayonne, in the county of Hudson and State of New Jersey, have-invented a new and usefu'i; Improvement in Air-Cooled Walls, of which the following is a specification.

My invention relates to an apparatus for Ventilating a furnace wall and more particularly to such an apparatus in which the air for such ventilation is taken from the wind box or air distributing box of `the stoker. f

My invention will best be understood by reference to the accompanying drawings in which Figs. 1 to 8 show one general-form of my invention, in which Fig. 1 is a vertical seetion through the furnace wall and a portion of the Stoker embodying my invention; Fig. 2 is a vertical sectional elevation with a ortion of the wind box broken away and ta en through the wall 10 at the rear of the `wind boxin Fig. 1; Figs. 3, 4, 5 and 6 are sectional .views on the lines 3 3, M, 5--5 and 6 6, respectively, of Fig. 1; Fig. 7 is a sectional view similar to Fig. 1 taken. throu h the furnace wall and showing a slight y modified form of my invention; Fig. 8 is a vertical sectional elevation, partially broken away, and taken through the wall 10a at the rear of the wind box 1n Fig. 7 g Figs. 9 to 16y illustrate modifications in which a Ventilating box is dlsposed 1n the lower portion of the furnace wall, Fig.

9 being a vertical section through the. lower portion of the wall; Fig. 10 an elevation of the structure shown in, Fig. 9 as viewed from within the furnace; Fig. 11 a perspective view illustrating a section of one-of the' ventilatingboxes with the associated parts;-

Fig. 12 is avertical section similar to 9 and illustrating a modified'form of my 1nvention, in which a supplemental wall is ration' of the ventilatingpipes from -thesupplemental wall, and Figs.. 17 and 18 are sectional views illustrating modified forms of sectional Ventilating boxes..

Referring, now, to the drawings, and rst to Figs. 1 to`8, .in'which I have illustrated the preferred form of my invention 10 is a furnace wall, here shown as a front furnace the front wall. Air under pressure is supplied to the wind box 12 in a well understood manner. The first seven rows of the brickwork of the wall are indicated by the reference numerals 13, 14, 15, 16, 17, 18 and 19, respectively. In the embodiment of my invention here shown, the rst row 13 of `the brickwork is laid solid across the boiler except for openings throughl which pass the tubes 20 which are connected to the wind box 12 and by means of which the furnace wall is ventilated, The second course 14 is preferably a header course, breaking joints with the first course and provided on the furnace side with narrow spaces 14xa between the adjacent bricks. The pipes 20, which are connected to-the wind box 12,-also pass through the bricks of the second course and extend nearly flush with the top of the same, the lspace surrounding the upper ends of the pipes being carefully grouted as at 21 so that the air passing through the pipes may not pass down around the bottom of the wall. The third course 15 is provided with an air space 22, asbest shown in Figs. 1 and 3, which extends the entire width of the boiler. The bricks of this course on the furnace side are-also spaced apart, as at 15, the fourth, fifth and sixth courses also being spaced apart in a similar manneraas indicated at' 16, 17a and 18, respectively. rIfhe fourth course 16 is built up similarly to the third course, with the exception that every third brick 23 is a tying brick across the air space 22. The fifth course is similar to the fourth course, with the exception that the tying brick 24 is located between the tying bricks 'of the fourth course. The sixth course 18 covers up the air space 220i the fifth course. The seventh course is a stretcher bourse, as indicated; i. e., the bricks are lald with their long faces to the furnace.

With the described arrangement, theair passes from the wind box of the Stoker into the airspace 22 formed within the third, fourth and fifth courses, and passes through the spaces formed between the bricks on the furnace side of these courses to the furnace, as well as through the spaces between the bricks of the second and sixth courses to the furnace.

ln Figures 7 and 8 l have shown a slightly modifi@ form of my invention, in which like parts are indicated by the saine reference characters used in connection with Figs. 1 to 6,` but with the exponent a added, and in which the Ventilating passages, which l have indicated by thelreference numeral 15", are confined to one of the courses, here shownas the third course, and extending from the point where the pipes 2Oa from the wind box enter this course to the interior of the furnace, as indicated vin Figure 3. The upper ends of the pipes 20EL are here shown as bent rearwardly to direct the air to the Various passages.

Referring now to Figs. 9 to 11, 10b is a furnace wall supported, in whole or in part, on the wind box or air distributing box 12", a Ventilating box 27 being disposed in .the lower portion of the wall and odset from the wind box 12b, as best shown in Fig. 9. The Ventilating box 27 is preferably formed in sections, and in the form here shown, the Various sections are closed at their ends, and are slightly spaced apart. By thus making the Ventilating box in sections, there is a less tendency to warp out of shape and. distort the wall.v The back of the Ventilating box may be formed of plates 27", which are secured against the outer surface of the wall, as indicated. ylChe ventilating box 27 communicates with theV wind box or air distributing box 12b by means of tubes 28. The lower portion of the wall 10b is provided with openings 29 into which project pipes 30 whichcornmunicate with the Ventilating box 27.

Fig. 17 illustrates a Ventilating box 27 similar in cross-section to that of Fig. 9 but in which the ends, are not closed, the walls of the adjacent sections abutting against each other as at 27, so as to provide a continuous passage through the sections. Figyl illustrates a further modiication in which the ends of the sections 27 are closed similarly to those shown in Figs. 9 to 11, but in which communication between the sections is furnished by means of pipes 43 en aging openings in the ends ,Y of the sections orming a sliding nt with one of the sections, as at 44, to provide for free ex ansion oit the Various sections..

n Figs. 12 to 16 ll illustrate my invention in conjunction with avfurnace wall, which l have indicated in general by the reference character 10, and which comprises a main wall l0d and a supplemental wall l0", which protects the lower portion .of the main wall.

rlFhe supplemental wall is supported, in whole or in part, on the wind box 12 of the stoker 1l, while the main wall is supported on the Ventilating box 3l. .lhe sides of the Ventilating box may be formed ci channel irons 32, theI flanges of which project inwardly, as indicated, the ends of the boxes being closed by anged plates 33 (see Fig. 14C). The Ventilating boxes may be secured at their ends to columns 34 or, if the boxes are made in sections in accordance with the practice outlined in Figs. 9 to 11, they may be supported on a number of struts. .s

ln order to cool the supplemental wall 10e and the lower portion of the main wall 10d, the supplemental wall is provided with openings 35 into which projects pipes 36 connected to the Ventilating box 3l, the passages in the wall thus furnishing communication between the Ventilating boxand the interior of the furnace chamber. Similarly, the lower portion of the main wall 10d is 4provided with openings 37, l.shaped in form, into which project pipes 38, as best shown in Fig. 12, the pipes being connected to the Ventilating boxes 31.., The Ventilating bex in this case is connected by a pipe 39 to the air chamber i0 of the stoker. Thesaid pipe preferably lies wholly within the setting, as indicated in Fig. 14.

ln `order to tie or bind the supplemental wall to the Ventilating box, and hence to the main wall, the ends of the pipes 33 are provided with anges lll, which engage cor- 'responding notches d2 formed inthe walls surrounding the opening 35, the notchesv preferably being sufficiently wide to provide a limited amount of movement between the Ventilating box and wall and thereby provide for expansion and contraction. In the construction shown in Fig. it the ends of the pipes are split and bent outwardly, while in Fig. l5 a flange 41a is formed integral with the end of the pipe 36, and engages a notch 4&2 in the wall. lin the construction shown in Fig. i6 the flange lib is formed on a sleeve or thimble, which is secured at the end of the pipe, the dange engaging a notch 42h formed in the wall.

The pipes 36 and 38 are surroded b grouting or other material, as indicate in Fig. l2.

lt will be a lparent that my invention provides a simp e and ecient means for Ven-I tilating the furnace wall, and one in which thecutting up ci the brick work is reduced to a imum.

'What .ll claim and desire to secure by Letters Patent of the United Stems is:

l. lin 'combination with a fuace wall formed with a Ventilating pass n a Stoker having a wind box which; serves at a support for said wall, means for introducing air icc 2. In combination wlth a front furnace wall formed with a Ventilating passage, a Stoker, a wind box forming part of the Stoker structure and' serving as a support for said wall, means for introducing air from said wind box to .said assage, and means for Ventilating said wal by the air from said Ventilating passage.

3. In combination with a furnace wall formed with a Ventilating passage, a Stoker, a wind -box forming part of the Stoker structure and serving as a support for said wall, and a plurality ofA pipes furnishing communication between Asaid wind box and said passage.

4. In combination, a furnace wall formed with passageways leading to the furnace chamber, a Stoker having a windbox serving as a sup ort for said wall, and connections for concliicting the air upward from said wind box through the lower courses Aof said wall to said passageways.

, 5. In combination, a-furnace wall formed with anjair space, a Stoker having a wind box serving as a support for said wall, and connections for supplying. air from said, wind box to said spacel through the bottom of said wall, said wall being provided with passages leading from said space to the inner face of said wall.

6. In combination, a furnace wall formed with an air space extending longitudinally of said wall, a Stoker having a wind box serving as a support'for said wall, andconnections for supplyin air from said wind box to said Space, sai wall'bein provided with passages leading from sai space to the inner face of said wall.

7. In combination, a furnace'wall formed with an air space, the bricks on the inner port for said wall, and connections for supplying air from said wind box to Said airA space.

8. In. combination, a furnace wall formed ity of courses of bricks, tying bricksintermediate the height of said space and extend- 'ing across the space, a Stoker having a wind box serving as a support Afor said wall, and connections for Supplying air from said wind box to said space, said wall being provided with passages leading from said space to the'inner face of said wall.

9. In combination, a furnace wall having an airspace extending longitudinally-thereof, a stoker having a wind box located beneath and serving-as a Su port for said wall, and connections arrange at Various points along said wind box for supplying air to said air space, said wall being provided wit-h passages leading from said air space to the inner face of the wall.

10. In combination, a furnace wall having an air space extending lon itudinally thereof, a Stoker having a wind box located beneath and serving as a su Vport for Said wall, and connections arran at various points along .said windbox for supplying air to said air Space, the bricks of said wall at the rear of said air space being spaced apart to form passages leading from saidl air space to the face of said wall. l

11. In combination with a furnace wall l with an air space extending across a pluralprovided with a Ventilating passage, a Stoker l aving a wind-box which serves as a support forl said wall, means for introducing air from said wind-box to Said passage throughv the bottom of said wall, and means for Ventilating said wall by the -air from said Ventilating passage. v

In testimony whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

,HOWARD J. KERR.J

' Witn:

Amon A. S,

\ A. N. Lowns. 

